Line of Credit	12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]
Line of Credit	Line of Credit The Company has a $10.0 million revolving line of credit with a domestic bank. At December 31, 2016 and 2015, there were no borrowings under the line. Under the terms of the line of credit, available borrowings are reduced by outstanding letters of credit. As of December 31, 2016, the Company had letters of credit outstanding of approximately $2.7 million under the facility and available borrowing of $7.3 million. The line is secured by substantially all of the assets of the Company, and bears interest at varying rates (currently LIBOR plus 1.5% or Prime less 0.75%). The line of credit matures on July 31, 2017, and requires monthly payments of interest only. The Company’s agreement with the bank requires it to comply with certain financial and other covenants including maintenance of a minimum leverage ratio and fixed charge coverage ratio. The leverage ratio (ratio of total liabilities to tangible net worth) can be no greater than 1:1, and the fixed charge coverage ratio can be no less than 1.25:1, based upon a trailing twelve-month period. At December 31, 2016, the Company’s tangible net worth ratio was 1.02:1 and its fixed charge coverage ratio was 2.30:1. The Company's violation of the leverage ratio requirement was waived as of December 31, 2016.

Line of Credit

12 Months Ended

Dec. 31, 2016

The Company has a $10.0 million revolving line of credit with a domestic bank. At December 31, 2016 and 2015, there were no borrowings under the line. Under the terms of the line of credit, available borrowings are reduced by outstanding letters of credit. As of December 31, 2016, the Company had letters of credit outstanding of approximately $2.7 million under the facility and available borrowing of $7.3 million. The line is secured by substantially all of the assets of the Company, and bears interest at varying rates (currently LIBOR plus 1.5% or Prime less 0.75%). The line of credit matures on July 31, 2017, and requires monthly payments of interest only. The Company’s agreement with the bank requires it to comply with certain financial and other covenants including maintenance of a minimum leverage ratio and fixed charge coverage ratio. The leverage ratio (ratio of total liabilities to tangible net worth) can be no greater than 1:1, and the fixed charge coverage ratio can be no less than 1.25:1, based upon a trailing twelve-month period. At December 31, 2016, the Company’s tangible net worth ratio was 1.02:1 and its fixed charge coverage ratio was 2.30:1. The Company's violation of the leverage ratio requirement was waived as of December 31, 2016.